| 单词 | radioactive isotope |
| 释义 | radioactive isotopen.An isotope having an unstable nucleus that decomposes spontaneously by emission of a nuclear electron or helium nucleus and radiation, thus achieving a stable nuclear composition. Words nearby radioactive isotoperadioactive, radioactive constant, radioactive dating, radioactive decay, radioactive iodine, radioactive isotope, radioactive series, radioactive tracer, radioactive waste, radioactivity, radioallergosorbent test The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
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